| Thessaloniki to Navodari | 385.07 mi (619.70 km) |
| Thessaloniki to Negresti-Oas | 500.07 mi (804.78 km) |
| Thessaloniki to Nehoiu | 367.39 mi (591.26 km) |
| Thessaloniki to Ocna Mures | 399.95 mi (643.66 km) |
| Thessaloniki to Odobesti | 410.67 mi (660.91 km) |
| Thessaloniki to Odorheiu Secuiesc | 409.52 mi (659.07 km) |
| Thessaloniki to Oltenita | 303.94 mi (489.14 km) |
| Thessaloniki to Onesti | 433.09 mi (696.99 km) |
| Thessaloniki to Oradea | 447.25 mi (719.78 km) |
| Thessaloniki to Orastie | 360.20 mi (579.69 km) |
| Thessaloniki to Oravita | 310.52 mi (499.73 km) |
| Thessaloniki to Orsova | 283.57 mi (456.36 km) |
| Thessaloniki to Otelu Rosu | 338.33 mi (544.49 km) |
| Thessaloniki to Otopeni | 313.63 mi (504.74 km) |
| Thessaloniki to Ovidiu | 380.79 mi (612.82 km) |
